Quotients of Raikov-complete topological groups


Abstract


A topological group X is called Raikov-complete if the two sides uniformity on X, that is the supremum \mathcal L\vee \mathcal R of the left uniformity and the right uniformity \mathcal R on X, is complete.It will be proved that the quotient (X/G, (\mathcal L/G) \vee (\mathcal R/G)) of an inframetrizable Raikov-complete topological group X with a neutral subgroup G is complete.(If G is normal (and therefore neutral), the completeness of (X/G, (\mathcal L/G) \vee(\mathcal R/G)) is equivalent to the Raikov-completeness of the quotient group X/G).The proof consist in an intricate lifting of (\mathcal L/G)\vee(\mathcal R/G) -Cauchy filters. Where it is possible, the results on topological groups will be derived from results on uniform spaces.

DOI Code: 10.1285/i15900932v13n1p75

Classification: 54E15; 54E50; 22A05

Full Text: PDF


Creative Commons License
This work is licensed under a Creative Commons Attribuzione - Non commerciale - Non opere derivate 3.0 Italia License.